基于预测函数控制的制粒机控制应用研究  

Application Study of the Pellet Mill Control Based on Predictive Functional Control

作　　者：张培建[1] 吴建国[2] 

机构地区：[1]南通大学电子信息学院,江苏南通226019 [2]南通大学电气工程学院,江苏南通226019

出　　处：《电气自动化》2008年第2期11-13,共3页Electrical Automation

基　　金：南通市应用基础研究项目(K2006005)(K2007017);南通大学自然科学基金立项项目(06Z038)

摘　　要：制粒机是饲料机械中的关键设备之一,其调质器属于多变量耦合对象,常规控制难以获得满意的控制效果。为此建立了制粒机调质器的双输入双输出数学模型,并采用对角矩阵解耦设计方法实现解耦,最后利用预测函数控制(PFC)实现了对制粒机的有效控制。为了增强 PFC 的鲁棒性,采用了特征模型来构造 PFC 的预测模型。加入了负荷设定值自整定环节,以确保制粒机的运行效率的提高。实际运行表明,这种控制方法能在正常制粒的同时,做到满负荷运行。Pellet mill is one of the key equipments among feed machinery ones and its conditioning tank belongs to multi-variable coupled objects, therefore, regular control can not obtain satisfied control results. Usually pellet mill can only be hand operated with low productive efficiency. This paper established double-input double-output mathematic model for pellet mill conditioning tank and also achieve decoupiing by applying Diagonally Dominant Matrix decoupling design. Finally, by use of predictive functional control （PFC） obtained the effective control of pellet mills. In order to strength robustness of PFC, we used characteristic models to structure predictive model of PFC. Adding self-tuning step to load setting value to make sure improvement of running efficiency of pellet mills. Practical operation manifest that this control method can be full load carried out while palletizing normally.

关 键 词：预测函数控制 调质器 制粒机 

分 类 号：TP202[自动化与计算机技术—检测技术与自动化装置]